/*
 * Copyright (c) 2020, 2023 Oracle and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.helidon.microprofile.messaging.health;

import java.util.Optional;
import java.util.concurrent.CompletableFuture;

import io.helidon.common.reactive.Single;

import org.reactivestreams.Subscriber;
import org.reactivestreams.Subscription;

public class TestSubscriber<T> implements Subscriber<T> {
    private Subscription subscription;
    private final CompletableFuture<Throwable> error = new CompletableFuture<>();

    public void cancel() {
        Optional.ofNullable(subscription).ifPresent(Subscription::cancel);
    }

    Single<Throwable> error(){
        return Single.create(error);
    }

    @Override
    public void onSubscribe(final Subscription subscription) {
        this.subscription = subscription;
    }

    @Override
    public void onNext(final T o) {

    }

    @Override
    public void onError(final Throwable t) {
        error.complete(t);
    }

    @Override
    public void onComplete() {

    }
}
